Calculate the mean, variance, and standard deviation. Round your answers to two decimal places. Mean = $ i 115 Variance = i Standard deviation = $ i

Q: government employees is selected, find the mean, variance, and standard deviation of the number who…

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Q: find the standard deviation and variance

A: Here given 53 data of body weight in lbs

Q: What do standard deviation, range, and IQR tell us about a data set? O They tell us how many points…

A: What do standard deviation ,range,and IQR  tell us about a data set  ?

Q: Challenge Question: The distances an athlete jumps are normally distributed with mean 5.2 m. If 15%…

A: The distances an athlete jumps normally distributed with mean of 5.2m. The 15% of jumps by athlete…

Q: What is the variance if the standard deviation is 1? A, 0.1 B, 1 C. 5 D. 100

A: Solution: given standard deviations of random variable x is sd(x)=1  Then varience of x will be?…

Q: Briefly explain what is measured by the standard deviation and what is measured by the variance?

A: The variance calculates the average degree to which each point is different from the mean-the…

Q: Two data sets yield the following standard deviations.  Which data set is more consistent?   Data…

A: If the variability in the distribution is lower, then the values in the data set are more…

Q: population consists of values 4, 8, 12, and 16. What is the standard deviation? (approximate value)…

A: Given sample values - 4, 8, 12, 16 Size  = N = 4  Mean =  μ=∑xN=4010=4

Q: a. the range b. the variance c. the standard deviation

A: The given frequency distribution is Class interval Frequency (f) Mid value (x) fx fx2 7-9 2 8…

Q: The square root of the variance is the mean relative error a. b. C. d. standard deviation…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: Statisticians use what symbol for the standard deviation?

A: In general, statisticians use the symbol (A) s for the standard deviation.

Q: ​(a) Determine the standard deviation of recumbent length for all 20 observations.   nothing cm…

A: The mean is,…

Q: how do you find standard deviation? how many bars should you have for a standard deviation? do you…

A: Introduction:The standard deviation of a set of observations is the square root of the average of…

Q: The mean weight of fish raised at the Stockton Fish Farm is 2.2 pounds. The standard deviation is…

A: Chebyshev's theorem: At least 1-(1/k2) of the values are lies between k standard deviations µ±kσ.…

Q: A normal distribution of test scores has a mean of 38 and a standard deviation of 6. What percent of…

A: The distribution of X is given as, X~N(µ=38, σ=6).

Q: Using your calculator, determine 2.1 the standard deviation 2.2 the variance 2.3 the mean.

A: Let x denotes the number of passengers and f denotes the frequency.

Q: Homework B: As shown in the table below that gives the age distribution of individuals starting new…

A: Mean is the average of all the observations which is one of the important central tendency measure.…

Q: What is P(x < 7)?    (Express your answer as a decimal.) What is the standard deviation?     (Round…

A: To find standard deviation and probability we need of probability density function

Q: LOWEST TERM: 15 17 18 19 20 21 22 23 24 P(X) 3. 5 34 34 17 17 34 34 17 34 34

A: Know that  Mean = E(x)= ∑x×p(x) E(x2)=∑x2×p(x) Var(x)=E(x2 ) - [E(x)]2

Q: Compare the variance and standard deviation of the figures provided

A: From the given information,

Q: A statistics professor gives a survey to each of the 100 students in an introductory statistics…

A: Obtain the population standard deviation:

Q: Daily Newspapers A survey was taken of the num- ber of daily newspapers a person reads per day. Find…

A: The random variable X denotes the number of daily newspapers a person reads per day. The formula for…

Q: Suppose a population has a mean weight of 180 pounds and a standard deviation of 25 pounds. A sample…

A: We have to find standard error for given data.

Q: What is the variance and standard deviation of the scores for my first test? Use formulas and show…

A:

Q: a normal population has a mean of 28 and a standard deviation of 5. what proportion of the…

A: It is given that mean and standard deviation are 28 and 5, respectively.

Q: 2. What percent of values of a normally distributed variable lie between the mean and two standard…

A: Given: Let X be the random variable X~ Normal ( μ, σ2)

Q: What is the relationship between the variance and the standard deviation for a sample data set? A.…

A: Variance: Variance is defined as a measure of variability to represent members of a group. The…

Q: DECIMAL FORM: 15 17 18 19 20 21 22 23 24 0.06 0.03 0.03 0.03 0.09 0.18 0.18 0.15 0.26

A: Given that    We have to find mean, variance, and standard deviation :

Q: 5. If the variance of a data set is 64, what is the standard deviation? a. 4 b. 8 c. 32 d. 4096 6.…

A: To find: 1.Standard deviation 2.Variance

Q: DECIMAL FORM: 15 17 18 19 20 21 22 23 24 P(X) 0.03 0.09 0.18 0.18 0.15 0.26 0.6 0.03 0.03

A: Formula used.  E(x)= ∑x×p(x) E(x2 )=∑x2 ×p(x) Var(x)=E(x2 ) - [E(x)]2

Q: Find the mean and variance and standard deviatio

A: Given: Data 3 3 5 6 8 33 33 35 36 38

Q: The scores of students on a standardized test are normally distributed with a mean of 300 and a…

A:

Q: In a normal distribution of measurements having a mean of 495 feet and a standard deviation of 55…

A: Consider that X is a random variable defined as a measurement.Thus,

Q: Thirty-one percent of adults think that life existed on Mars at some point in time.   You randomly…

A: Given information: Thirty-one percent of adults think that life existed on Mars at some point in…

Q: If the population standard deviation is 5.6, what is the population variance?

A:

Q: Find below the hours of sleep for 12 people who filled out the survey. a. Find the mean (do not…

A: a. Mean = 6.5 Variance = 1.8182 Standard deviation = 1.3484

Q: the probab 9. What is the value of the mean of the sample means? A. 2.3 В. 27 C. 28.3 D. 40 10. What…

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Q: For a certain battery company, the life span of the batteries follows a normal distribution. What…

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Q: If the variance is 140.2, what is the Standard deviation from the following? a. 12.84 b. 15.56 c.…

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Q: The histogram (click the attacthed photo to view) shows the distribution of hurricanes that have hit…

A: From the provided histogram, The probability distribution table is as follow: Category (x)…

Q: Find the mean,variance ,and standard deviation for each set of data

A: We have to calculate the mean, variance and SD for the given frequency distribution.

Q: The annual salaries of employees in a large company are normally distributed with a mean of $55,000…

A: Given  For x = 55000 for x = 70000

Q: Find the mean, variance, and standard deviation for each set of data

A: We have to calculate mean, SD and variance for given frequency distribution.

Q: Arm Span (cm) Student X - X (x – x)² Abdulah 153 Davina 162 Lorne 187 Nial 178 Carlos 175

A: GIVEN  DATASET : 153  162  187  178  175

Q: The IQ of a person follows a normal distribution and has a mean of 100 and a standard deviation of…

A: Option A is correct.

Q: A normal distribution has a mean of 132 with a standard deviation of 28. By the Empirical Rule…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: What is the standard deviation of the distribution?    A. 3.54   B. 3.98

A: From the given information, Class interval Frequency 16-20 3 11-15 14 6-10 7 1-5 1   25…

Q: The lengths in minutes of feature films for the current year follow a normal distribution with a…

A: According to the given information, we have The distribution is normal. Mean = 109 minutes Standard…

Q: What is the standard deviation if the variance is 6.25? A, 2.5 B, 2.8 C. 3.5

A:

Statements and Logic

Logic is the analysis of general patterns of thoughts without regard to any specific sense of context.